Another point to cover when preparing for rehearsals is to determine the appropriate type of rehearsal to have.  The song is the main determinant. Depending on where a song is categorized on your list of readiness (song idea thru performance ready) will determine the appropriate type of rehearsal to use.  One rehearsal session may incorporate the methods used in the various types of rehearsal. Again the song dictates the type of rehearsal.  So what are these rehearsal types? 

• Jamming rehearsal – new song is introduced, learn chord changes, very loose approach, figuring out what the song should sound and feel like.
• Song writing rehearsal – the band as a whole writes a song.  Similar approach as a jamming rehearsal except you’ll be creating the chord changes on the fly.
• Song Arrangement rehearsals – assign parts and focus on specific sections in the music.  Work in small groups (bass and drums only, drums and vocals only).
• Performance rehearsal – Your live set is fined tuned.
• Pre-production (for recording) rehearsal – here your thinking about instrumentation, breaking the song down instrument by instrument, assigning instruments to your track map.
• Technical rehearsal – work on moving smoothly thru your effects processors, instrument changes, and amp settings.
• On camera rehearsal – video a dress rehearsal, practice movements.
• Live radio show rehearsal – work on song introductions, edit song length if necessary, come up with “sound bites”.
• Rehearsals for interviews – have a friend interview the band; get comfortable with answering questions on the fly.